If Apple billed your SuperGrok subscription by mistake, visit...

https://www.coast-bookmarks.win/if-apple-billed-you-for-supergrok-and-you-want-a-refund-visit-1

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund directly. Cancelling SuperGrok through iOS Settings > Subscriptions stops future charges but won’t refund past payments